JP4705611B2 - Driver assistance device for paving machines - Google Patents

Description

  The present invention relates to a driver assistance device for a pavement machine, and in particular, a monitoring camera is installed on the pavement machine, and the outer peripheral part of the hopper that is opened and closed to the left and right is set as a monitoring camera. The present invention relates to a driver assistance device for a paving machine that can be monitored at a driver's seat through a monitor.

  2. Description of the Related Art Conventionally, in construction machines such as hydraulic excavators, a camera device that monitors a blind spot of a driver in a driver's seat by installing a monitoring camera at a rear portion of a vehicle body is known (for example, see Patent Document 1). However, there is no known paving machine provided with a camera device that monitors the inside of the hopper, which is a blind spot of the driver in the driver's seat, and the outer periphery of the hopper that is opened and closed to the left and right.

  FIG. 7 is a schematic side view of a general asphalt finisher. In the figure, an asphalt finisher 11 has a vehicle body 13 supported by a crawler 12, and a self-propelled vehicle body 15 that travels by the power of an engine (not shown) in a power unit 14 mounted on the vehicle body 13, A hopper 16 for accommodating an asphalt mixture provided at the front of the vehicle body 15 and a screw auger (not shown) supported at the rear of the vehicle body 15 in the left-right width direction (direction perpendicular to the paper surface) of the vehicle body 13. Between the hopper 16 and the front part of the screw auger (not shown), a conveyor (not shown) provided on the vehicle body 13 along the front-rear direction (left-right direction in the figure), and the front end part The vehicle body 15 is connected and pulled to the vehicle body 15 by a leveling arm 18 that is rotatably supported on both sides of the center in the front-rear direction of the vehicle body 15 and is Includes a by which the screed 19 that is rotatable, and a cockpit 22 with steering device 20 and a driver's seat 21 provided in an upper portion of the vehicle body 15 on.

  The traveling direction of the asphalt finisher 11 is the direction of arrow A in the figure. Further, the hopper 16 is formed so that it can be expanded to the left and right with the conveyer interposed therebetween, and the left and right side surfaces of the hopper 16 are moved in the vertical direction by hydraulic cylinders 35, 35 disposed on both sides of the front portion of the vehicle body 13. The structure is such that the vehicle body 13 is pivoted in and out of the vehicle width direction. The structure in which the hopper 16 opens and closes can be known from, for example, Patent Document 2.

  Further, in the case of the large asphalt finisher 11, since the built-in components such as the power unit are increased in size, the vehicle body becomes large and the visibility of the driver is lowered. For this reason, conventionally, the driver's seat 21 is provided in the cockpit 22 side by side in the left and right (vehicle width direction), and the control device 20 can also be switched to the left and right positions according to the driver's seat 21 where the driver sits. Such a structure is also known.

  The asphalt finisher 11 is supplied with the asphalt mixture by bringing the dump truck loaded with the asphalt mixture closer to the hopper 16 opened to the outside and feeding the asphalt mixture into the hopper 16 from the dump truck. Is done by. The asphalt mixture supplied into the hopper 16 is dropped onto the conveyor, further sent to the rear part of the asphalt finisher 11 by the conveyor, and evenly distributed by the screw auger on the front side of the screed 19 and then spread on the screed 19. Is pressed and is smoothly laid on the pavement surface 23.

When the asphalt mixture loaded on the dump truck is exhausted, the dump truck is separated from the hopper 16, but the asphalt finisher 11 continues to work because the asphalt mixture remains on the conveyor in the hopper 16. When there is no more asphalt mixture on the conveyor, the left and right side surfaces of the hopper 16 are pivoted inward and upward by the hydraulic cylinders 35, 35, closed in an upright state, and left on the left and right inner surfaces of the hopper 16. The asphalt mixture is dropped onto the conveyor. Further, when the next dump truck carries the asphalt mixture, the left and right side surfaces of the hopper 16 are rotated outward to be opened in order to receive the new asphalt mixture.
Japanese Utility Model Laid-Open No. 7-20354. Japanese Patent No. 3818973.

  However, in this type of asphalt finisher 11, in order to confirm whether or not the inside of the hopper 16 becomes a blind spot from the driver seat 21 where the driver is sitting and the asphalt composite material remains in the hopper 16, FIG. As shown, it is necessary for the driver M to stand up to the position of the symbol Ma and look into the hopper 16. In addition, when the user sits on the left or right driver's seat 21 and operates the vehicle, the outer peripheral portion of the hopper far from the driver's seat 21 where the driver is sitting becomes the driver's blind spot. Therefore, when the left and right side surfaces of the hopper 16 are opened, in order to confirm the safety of the blind spot part, the driver works while standing up at the driver seat 21 or moving from the driver seat 21. For this reason, workability | operativity was bad and the driver | operator was also burdened.

  Therefore, when the driver's seat is moved to the left or right side in the paving machine, it is possible to check the inside of the hopper that becomes the blind spot of the driver and the outer periphery of the hopper that is opened and closed to the left and right, and the work load on the driver Therefore, there is a technical problem to be solved in order to improve the workability and safety, and the present invention aims to solve this problem.

The present invention has been proposed in order to achieve the above-mentioned object, and the invention according to claim 1 is a maneuvering mechanism in which the driver can move to the left or right position in the width direction of the vehicle body according to the pavement condition. A vehicle main body provided with a device and a driver's seat, a hopper provided at the front of the vehicle main body and rotated and opened in the width direction of the vehicle body, and an asphalt mixture put into the hopper a paving machine provided with a conveyor for conveying the,
The composite monitoring camera, the left monitoring camera and the right monitoring camera for photographing the inside of the hopper which is a blind spot from the driver's seat and the outer periphery of the left and right opened / closed hoppers, and provided at a position visible from the driver's seat A monitor that displays images captured by each surveillance camera, a driver seat position switch that switches the images displayed on the monitor according to the position of the driver seat, a hopper opening / closing operation switch that opens and closes the hopper, and the switches in the driver assistance device of paving machine provided with a controller to input electrical signals to selectable images to project on the monitor,
The controller monitors the video displayed on the monitor when the driver's seat is moved to the left or right to turn on the driver's seat position switch and the hopper opening / closing switch is turned on to the open operation position. Controls to select and switch the video of the right or left surveillance camera among the cameras. On the other hand, when the hopper opening / closing operation switch is turned on to the close operation position or the stop position, the image displayed on the monitor is displayed. Provided is a pavement machine driver support device , characterized in that control is performed so as to select and switch a video of a composite material monitoring camera among the monitoring cameras .

  According to this configuration, the inside of the hopper which is a blind spot from the driver seat where the driver sits and the outer periphery of the hopper which is opened and closed to the left and right are photographed by the surveillance camera, and this image is displayed on the driver seat on the left or right side. You can check through the monitor while sitting down. When the position of the driver's seat to be operated is changed, the driver's seat position switch is switched. When the hopper opening / closing operation switch is turned on to the open operation position, the hopper opens, and when it is turned on to the close operation position, the hopper Close operation. In accordance with the on / off of each switch, the controller controls to select and switch the video of the surveillance camera displayed on the monitor.

  According to this configuration, when the driver's seat is moved to the left or right, either the left or right driver's seat position switch is turned on, and the hopper opening / closing operation switch is turned on to the open operation position, and the hopper is being opened, The controller controls to select and switch the video of the right or left monitoring camera. On the other hand, when the hopper opening / closing operation switch is turned on to the closing operation position or the stop operation position and the hopper is in the closing operation or is stopped, the controller controls to select and switch the video of the material monitoring camera. To do.

According to a second aspect of the present invention, a selection switch is provided in the control device so that a driver can select an image displayed on the monitor, and the controller displays an image displayed on the monitor when the selection switch is turned on. The driver assistance device for a pavement machine according to claim 1, wherein control is performed so as to switch to an image of a selected surveillance camera among the surveillance cameras.

  According to this configuration, when the driver turns on the selection switch provided on the control device to an arbitrary selection position, the controller controls the video displayed on the monitor to be switched to the video of any selected monitoring camera. To do.

According to a third aspect of the present invention, the control device is provided with a division switch capable of dividing an image projected on the monitor and simultaneously displaying the images of the plurality of surveillance cameras, and the controller has the division switch turned on. 3. The pavement machine driver support according to claim 2, wherein control is performed so that images of a plurality of monitoring cameras selected by the selection switch among the monitoring cameras are simultaneously displayed on the monitor. Providing equipment.

  According to this configuration, when the driver turns on the split switch provided in the control device, the controller controls the images of the plurality of monitoring cameras selected by the selection switch to be displayed side by side on the monitor at the same time.

  According to the first aspect of the present invention, the inside of the hopper, which is a blind spot from the driver, and the outer periphery of the hopper that is opened and closed to the left and right are confirmed through the monitor in a posture in which the driver is sitting on the left or right driver's seat. Therefore, the work load is reduced and workability and safety are improved. In addition, when the position of the driver's seat to be steered changes to the left or right, the image displayed on the monitor is switched to an image suitable for the driver's seat where the driver sits, so that the operability is improved.

This invention, on-the left or right side of the driver's seat position switch, and the hopper opening and closing operation switch When on the open operating position, corresponding to the on status of the left or right of the driver's seat position switch, right Or, since the video of the left surveillance camera is selected and switched, in addition to the effects described above , the driver is sitting while the hopper is open, and the outside of the hopper on the side opposite to the driver's seat position. Each peripheral situation can be confirmed, and when the hopper is in a closing operation or stopped, the situation in the hopper can be easily confirmed.

According to the second aspect of the present invention, the driver can turn on the selection switch to any arbitrary selection position so that the image of the selected surveillance camera can be displayed on the monitor. In addition, operability and safety are further improved.

According to a third aspect of the invention, by the driver to turn on the driver division switch, it is possible to project an image of a plurality of monitoring cameras selected by the selection switch on the monitor, the invention of claim 2, wherein In addition to the effects, the operability and safety are further improved.

  Hereinafter, a pavement machine driver support apparatus according to the present invention will be described with reference to preferred embodiments. When the driver's seat is moved to the left or right side on a paving machine, the driver's blind spot can be checked inside the hopper and the outer periphery of the hopper that opens and closes left and right, reducing the work burden on the driver In order to achieve the object of improving workability and safety, the present invention provides a control device and a driver's seat in which the driver can move to the left or right position in the width direction of the vehicle body according to the pavement condition. A vehicle body provided with a hopper, a hopper provided at the front of the vehicle body that is opened and closed by turning in the width direction of the vehicle body, and a conveyor that conveys the asphalt mixture put into the hopper to the rear of the vehicle body In the pavement machine comprising the above, a composite monitoring camera, a left monitoring camera and a right monitoring camera for photographing the inside of the hopper that is a blind spot from the driver's seat and the outer periphery of the hopper that is opened to the left and right, and the driving A monitor that is provided at a position that can be viewed from the monitor that displays images taken by the respective monitoring cameras, a driver seat position switch that switches the images displayed on the monitor according to the position of the driver seat, and the hopper is opened and closed This is realized by providing a hopper opening / closing operation switch and a controller for selecting an image to be displayed on the monitor by inputting an electric signal from each switch.

  1 to 3 show an asphalt finisher that is a paving machine to which the present invention is applied, FIG. 1 is a side view thereof, FIG. 2 is a top view thereof, and FIG. 3 is a rear view thereof. In FIG. 1 to FIG. 3, portions corresponding to the asphalt finisher shown in FIG. 7 are denoted by the same reference numerals. The asphalt finisher 11 has a vehicle body 13 supported by a crawler 12. A self-propelled vehicle main body 15 that travels by the power of an engine (not shown) in the mounted power unit 14, a hopper 16 that accommodates an asphalt mixture provided at the front of the vehicle main body 15, and a rear portion of the vehicle main body 15 A screw auger (not shown) supported in the left-right width direction (direction perpendicular to the paper surface) of the vehicle body 13 and a longitudinal direction of the vehicle body 13 between the hopper 16 and the front portion of the screw auger (not shown). A conveyor 24 provided along (in the left-right direction in FIG. 1) and a front end portion are rotatably supported on both sides at the center in the front-rear direction of the vehicle body 15. A cockpit having a screed 19 that is connected and pulled to the vehicle main body 15 by a leveling arm 18 and that can be turned up and down by a cylinder 17, and a control device 20 and a driver's seat 21 provided on the upper portion of the vehicle main body 15. 22.

  The traveling direction of the asphalt finisher 11 is the direction of arrow A in the figure. The hopper 16 is formed so as to be able to expand to the left and right with the conveyor 24 interposed therebetween, and the left and right side surfaces of the hopper 16 are vertically moved by hydraulic cylinders 35 and 35 disposed on both sides of the front portion of the vehicle body 13, respectively. It is structured to open and close by rotating in the direction (inside and outside of the vehicle body 13 in the vehicle width direction).

  The driver's seat 21 disposed in the cockpit 22 on the vehicle body 15 is provided so as to be movable in the vehicle width direction, and the control device 20 also moves to the left and right positions according to the driver's seat 21 where the driver sits. It has a structure that can be switched.

  FIG. 4 is a diagram schematically showing the front structure of the cockpit 22 in the vehicle body 15 provided with the control device 20. As shown in the figure, a pair of upper and lower rails 25, 25 extending in the left-right direction are fixed to the vehicle body 15 at the front part of the cockpit 22, and wheels 26, 26 attached to the lower part of the control device 20. Is arranged between the upper and lower rails 25, 25 so as to be freely rollable. Therefore, when the wheels 26 and 26 roll between the upper and lower rails 25 and 25, the control device 20 can move left and right along the rails 25 and 25. The left side position indicated by the solid line in FIG. , And can be switched to a right position indicated by a two-dot chain line.

  When the control device 20 is moved to the left position, the driver's seat 21 is also moved to the left position so that the driver can sit in the left driver's seat and operate the control device 20. When the control device 20 is moved to the right position, the driver's seat 21 is also moved to the right position, so that a state suitable for the driver to sit on the right driver's seat and operate the control device 20 is obtained.

  Further, when the control device 20 is disposed at the left position between the vehicle body 15 and the control device 20, a driver seat position switch 27 for detecting this, and when the control device 20 is disposed at the right position, A driver seat position switch 28 for detecting this is provided. These left and right driver's seat position switches 27 and 28 are of any structure such as a micro switch. In addition, a stopper (not shown) can be fixed at either the left or right position so that the control device 20 does not inadvertently move.

  Further, on the vehicle main body 15, on the front side of the cockpit 22, as shown in FIGS. 1 and 2, the left monitoring camera 29 capable of photographing the left outer periphery of the hopper 16 and the right outer periphery of the hopper 16 are photographed. A possible right-side monitoring camera 30 and a composite monitoring camera 31 capable of photographing the inside of the hopper 166 are provided. The vehicle body 15 is provided with a hopper opening / closing operation switch 33 for opening and closing the hopper 16. In addition, the image | video image | photographed with the said monitoring cameras 29-31 can be seen in the attitude | position which a driver | operator is sitting in the driver's seat 21 through the monitor 32, and this monitor 32 is provided in the control apparatus 20 (FIG. 4).

  FIG. 5 is a block diagram showing the configuration of a control circuit for projecting each image taken by the left monitoring camera 29, the right monitoring camera 30, and the composite monitoring camera 31 on the monitor 32. In the figure, a controller 34 controls the entire asphalt finisher 11 according to a predetermined procedure. In addition to the key switch 36 for starting the engine of the asphalt finisher 11, the controller 34 includes the left and right driver seat position switches 27 and 28, the hopper opening / closing operation switch 33, the left monitoring camera 29, the right monitoring camera 30, A composite monitoring camera 31 and a monitor 32 are connected.

  The controller 34 has a selection switch 39 for selecting the left monitoring camera 29, a selection switch 40 for selecting the right monitoring camera 30, a selection switch 41 for selecting the composite monitoring camera 31, and a monitor. A division switch 42 is connected, which can divide the image to be displayed and simultaneously display the images of a plurality of surveillance cameras.

  Next, the operation of the asphalt finisher 11 configured as described above will be described. First, the basic operation of the asphalt finisher 11 will be described. When the driver turns on the hopper opening / closing operation switch 33 at the opening operation position 33A, the hopper 16 opens and opens outward, and the dump truck loaded with asphalt composite is loaded. The asphalt mixture is introduced into the hopper 16 from this dump truck by approaching the opened hopper 16.

  The asphalt mixture supplied into the hopper 16 falls onto the conveyor 24, is further sent to the rear part of the asphalt finisher 11 by the conveyor 24, and is uniformly distributed by the screw auger on the front side of the screed 19, The floor is leveled and pressed, and is smoothly laid on the pavement surface 23.

  When the asphalt mixture loaded on the dump truck is exhausted, the dump truck is separated from the hopper 16, but the asphalt finisher 11 continues to work because the asphalt mixture remains on the conveyor in the hopper 16. When there is no more asphalt mixture on the conveyor, the left and right side surfaces of the hopper 16 are pivoted inward and upward by the hydraulic cylinders 35, 35, closed in an upright state, and left on the left and right inner surfaces of the hopper 16. The asphalt mixture is dropped onto the conveyor. Further, when the next dump truck carries the asphalt mixture, the left and right side surfaces of the hopper 16 are rotated outward to be opened in order to receive the new asphalt mixture.

  Next, the driver assistance operation by the video display using the monitoring cameras 29 to 31 and the monitor 32 by the controller 34 will be described according to the flowchart shown in FIG.

  When the key switch 36 is turned on, control by the controller 34 starts. The controller 34 determines whether the driver's seat 21 is located at the left or right position based on signals from the driver's seat position switches 27 and 28. At the same time, the composite material monitoring camera 31 is turned on, and the composite material monitoring camera 31 displays on the monitor 32 an image of the asphalt composite material contained in the hopper 16.

  Here, when the driver's seat 21 is arranged at the left side position, the control device 20 is also at the left side position, and it is determined that the driver is sitting in the left side driver's seat 21 and maneuvering. When 21 is disposed at the right side position, it is determined that the control device 20 is also at the right side position, and the driver is switched to a mode in which the driver sits on the right driver's seat 21 and operates.

  When the driver turns on the hopper opening / closing operation switch 33 to the opening operation position 33 </ b> A, the controller 34 detects the opening operation of the hopper 16 by a signal from the hopper opening / closing operation switch 33. For example, when the opening operation of the hopper 16 is detected when the control device 20 is disposed at the left side position, the controller 34 turns on the right side monitoring camera 30 and turns the right outer peripheral portion of the hopper 16 to be the blind spot of the driver. Shoot. On the other hand, when the opening operation of the hopper 16 is detected when the control device 20 is arranged at the right side position, the controller 34 turns on the left monitoring camera 29 and the left outer periphery of the hopper 16 which becomes the driver's blind spot. Shoot the part.

  Then, the video imaged by either the left or right surveillance camera 29, 30 is displayed on the monitor 32. From the video image of the monitor 32, the driver can safely observe the situation in the outer periphery of the hopper 16 that is the blind spot of the driver. It can be determined whether or not. When the driver confirms safety and continues the opening operation of the hopper 16, the hopper 16 opens to the left and right and stops at a predetermined position.

  When the controller 34 determines from the signal from the hopper opening / closing operation switch 33 that the hopper 16 has stopped in the open state, the left monitoring camera 29 and the right monitoring camera 30 are turned off, and the video from the composite monitoring camera 31 is displayed. Is displayed on the monitor 32. Accordingly, the driver can receive new asphalt mixture from a dump truck or the like while confirming the supply status of the asphalt mixture into the hopper 16 with the monitor 32.

  In this way, the left and right monitoring cameras 29, 30 and the composite monitoring camera 31 are used to photograph the outer peripheral portion where the hopper 16 serving as a blind spot is opened and closed from the driver seat 21 where the driver sits and the situation inside the hopper 16, Since these images can be confirmed on the monitor 32 while the driver is sitting on the driver's seat 21, the work load is reduced and workability and safety are improved. Further, if the position of the driver's seat 21 where the driver sits to change is changed, the image displayed on the monitor 32 can be switched to an image suitable for the driver's seat where the driver sits, so that the operability is improved.

  In the above embodiment, the on / off operation of the right monitoring cameras 29, 30 and the composite monitoring camera 31 is automatically performed by the controller 34 based on the signals from the left and right driver seat position switches 27, 28 and the hopper opening / closing operation switch 33. In the above-described configuration, the switching is automatically performed. However, when the driver arbitrarily turns on one of the selection switches 37, 38, and 39 provided in the control device 20, the image displayed on the monitor 32 is selected. It can also be configured to switch to any of the images of the cameras 29, 30, 31. In the case of such a configuration, an image of an arbitrary monitoring camera desired by the driver can be confirmed on the monitor 32, and operability and safety are further improved.

  In addition, by turning on the division switch 40 provided in the control device, the video image displayed on the monitor 32 can be divided and the video images of the plurality of monitoring cameras 29 or 30 and 31 can be simultaneously displayed. In this case, the video shot by the left and right monitoring cameras 29 and 30 and the video shot by the composite monitoring camera 31 are displayed side by side on the monitor 32 at the same time, so that operability and safety are further improved. In addition to displaying the images of a plurality of monitoring cameras side by side on the monitor 32 at the same time, for example, it may be configured to automatically switch to a different monitoring camera image every predetermined time.

  In the present embodiment, the configuration in which the driver's seat 21 disposed in the cockpit 22 is provided so as to be movable in the vehicle width direction has been described. May be provided. In such a configuration, a driver sitting position detecting means such as a pressure switch is installed below the driver's seat 21. When the driver sits, the pressure switch is turned on, and in which driver seat the driver is sitting on the left or right. If it can be detected, the driver position can be specified.

  Thus, the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

The side view of the asphalt finisher which concerns on this invention. The top view of an asphalt finisher same as the above. The rear view of the asphalt finisher. The main part enlarged view of an asphalt main body same as the above. The schematic block diagram of the control circuit in an asphalt finisher same as the above. The flowchart which shows an example of control by a controller same as the above. A side view of a conventional asphalt finisher.

Explanation of symbols

11 Asphalt finisher (paving machine)
13 Vehicle Body 15 Vehicle Body 16 Hopper 20 Control Device 21 Driver's Seat 22 Control Room 24 Conveyor 27 Driver's Seat Position Switch (Left Side)
28 Driver's seat position switch (right side)
29 Left-side monitoring camera 30 Right-side monitoring camera 31 Composite monitoring camera 32 Monitor 33 Hopper opening / closing operation switch 34 Controller 39 Selection switch (left-side monitoring camera)
40 selection switch (right surveillance camera)
41 selection switch (mixing material monitoring camera)
42 Split switch

Claims (3)

A vehicle body provided with a control device and a driver's seat that can be moved to the left or right position in the width direction of the vehicle body according to the pavement condition, and provided in the front portion of the vehicle body in the width direction of the vehicle body a hopper which is opened and closed by rotating, a paver the asphalt mixture that is introduced into the hopper and a conveyor for conveying the vehicle body rear portion,
The composite monitoring camera, the left monitoring camera and the right monitoring camera for photographing the inside of the hopper which is a blind spot from the driver's seat and the outer periphery of the left and right opened / closed hoppers, and provided at a position visible from the driver's seat A monitor that displays images taken by each surveillance camera, a driver seat position switch that switches the images displayed on the monitor according to the position of the driver seat, a hopper opening / closing operation switch that opens and closes the hopper, and the switches in the driver assistance device of paving machine provided with a controller to input electrical signals to selectable images to project on the monitor,
The controller monitors the video displayed on the monitor when the driver's seat is moved to the left or right to turn on the driver's seat position switch and the hopper opening / closing switch is turned on to the open operation position. Controls to select and switch the video of the right or left surveillance camera among the cameras. On the other hand, when the hopper opening / closing operation switch is turned on to the close operation position or the stop position, the image displayed on the monitor is displayed. A pavement machine driver support apparatus, wherein control is performed so as to select and switch a video of a composite monitoring camera among the monitoring cameras. A selection switch is provided in the control device so that a driver can select an image displayed on the monitor, and the controller selects an image displayed on the monitor from the monitoring cameras when the selection switch is turned on. 2. The pavement machine driver support device according to claim 1, wherein control is performed so as to switch to the image of the surveillance camera. The control device is provided with a split switch capable of splitting the video displayed on the monitor and simultaneously displaying the images of the plurality of monitoring cameras, and the controller, when the split switch is turned on, 3. The pavement machine driver support device according to claim 2, wherein control is performed so that images of a plurality of monitoring cameras selected by the selection switch are simultaneously displayed on the monitor.

Images